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a complete motor neuron is removed from a frog and placed in a large volume of normal physiological saline the neuron is healthy it has a stable
determine the intracellular concentration of trvaconsider neuron b in the frog central nervous system whose plasma membrane has a previously unknown
which of the following is true for endocytosisa during endocytosis of glut4 transporters in fat cells there is removal of glut4 transporters from
which of the following is true for exocytosisa during exocytosis in skeletal muscle cells there will be release of calcium ions from intracellular
a decrease in blood plasma levels of parathyroid hormonea occurs in response to an increase in the levels of calcium ions in blood plasmab leads to
which of the following serves as a controlled variable in a negative feedback systema levels of hydrogen ions in the interstitial spaces of the
which of the following serves as an effector or as part of an effector that functions in a negative feedback systema muscarinic acetylcholine
which of the following serves as an actuating signal or as part of an actuating signal in a negative feedback systema action potentials in the fibers
which of the following serves as a sensor or as part of a sensor that functions in a negative feedback systema central thermoreceptor neurons whose
which of the following is true for a toe corticospinal interneuron that produces action potentials during movements of the big toe of the left foota
at 1 am a researcher places a healthy squid giant axon in a bath of normal squid physiological extracellular saline and internally perfuses the axon
in a neuron at rest the membranea voltage will be less than zerob sodium conductance is greater than the membrane potassium conductancec voltage is
intracellular sodium concentration of the motor neurona complete motor neuron is removed from a frog and placed in normal physiological saline at 1
which of the following is true for a toe motor neuron that excites a toe muscle that moves the big toe in the right foota the cell body of the toe
which of the following is true for a g-proteina after the atp-ase of the alpha subunit of a g protein converts the atp bound to the alpha subunit to
which of the following is an active transport processa net flux of sodium across the plasma membrane via voltage-gated sodium channelsb net flux of
a normal healthy cell is bathed in a normal extracellular saline the plasma membrane of the cell contains voltage-gated sodium channels
an impermeable membrane separates a one liter solution of 1m nacl in the left compartment from a one liter solution of 2m kcl in the right
an impermeable membrane separates one liter of a 1m kcl solution in the left compartment from one liter of 1m nacl solution in the right
an impermeable membrane separates one liter of a 001 m glucose solution in water in the left compartment from one liter of a 01 m glucose solution in
in a properly functioning negative feedback system thea value of the controlled variable will always be very close to the threshold value when the
a decrease in blood plasma levels of calcium will lead toa an increase in the calcium ion excretion in the urineb an increase in the calcium ion
which of the following serves as an effector or part of an effector that functions in a negative feedback systema 125-dihydroxyvitamin d receptors
which of the following serves as an actuating signal or as part of an actuating signal in a positive feedback systema blood plasma levels of pth
which of the following serves as a sensor or as part of a sensor that functions only in a negative feedback system and not in a positive feedback